Watch your tail motor wiresI just wanted to share, if it's not already been mentioned. I was looking at my nano, checking the wires and stuff. and noticed the tail motor wires was touching the butt end of the servo gear shaft. I figure it would cause a problem latter on so I used a plastic gyro screwdriver and pushed the wires off of it. The shaft turning back and forth would eventually wear through the coating on the wires, and either short the main board out, cause the tail to act funny, or other issues.Hope that helps someone down the road, maybe save you a main board.